GF Piping Systems” Signet 2537 paddlewheel flow sensor is a blind system that offers a variety of output options in a single unit to reduce overall system costs by eliminating the need for unnecessary components. Output options include four to 20 mA, pulse divided, Signet S3L data link, and several other output configurations. Typical applications include water and wastewater treatment, chemical processing, and pump protection. The sensor is available with a variety of body and rotor pin materials. Material choices include polypropylene and PVDF for corrosion resistance and maximum purity with fluids ranging from ultrapure water to the harshest reagents. The unit can be ordered with digital S3L or 4 to 20 output, dry contact or solid-state pulse divider, or dry contact or solid-state flow switch. Using the digital S3L model, the flow sensor can be connected to GF Piping’s Signet 8900 multi-parameter controller to expand the number of flow inputs from two to six. The flow sensor”s performance characteristics include a wide dynamic flow range from as low as 0.3 feet per second to 20 feet per second (with repeatability of +/- 0.5 percent of reading). All models feature a repeatable output of +/- 0.5 percent of maximum range at 77 F (25 C) and an input frequency range of one Hz to 1000 Hz.